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Interactive Information Access to Federations of DL Services

Interactive Information Access to Federations of DL Services. Norbert Fuhr University of Duisburg-Essen Germany fuhr@uni-duisburg.de. 1. From Information Access to Information in Context. Information Access Considering Context Time Work Social. Text Facts 2D 3D Speech Audio Video.

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Interactive Information Access to Federations of DL Services

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  1. Interactive Information Access to Federations of DL Services Norbert Fuhr University of Duisburg-Essen Germany fuhr@uni-duisburg.de

  2. 1. From Information Access to Information in Context • Information Access • Considering Context • Time • Work • Social

  3. Text Facts 2D 3D Speech Audio Video Ad-hoc Retrieval Filtering/Routing Classif./Clustering Question Answering Summarization unstructured semi-struct. fully struct. hyperlinked Media/ Objects Structure/ Relationships Access method Information Access Most methods do not consider any context!

  4. Considering Context social context work context time

  5. Time-dependence • Batch retrieval • Constant information needs (Filtering  adaptation) • Interactive retrieval • Personalization: • Preferences • Seen items • Evolving interests

  6. Work context • Context-free • Task-specific searches • Workflow (e.g. DL Life Cycle)

  7. Social context • Single user • (Fixed) user groups • Collaborative information access • (Open) communities

  8. Context dimensions social work communities application workflow teams generic problem solving single users ad-hoc retrieval time interactive retrieval batch retrieval personalization

  9. 2. Federations of services for interactive access • Homogeneous federations • Heterogeneous federations • Interactive access

  10. Federations of Homogeneous Services

  11. Access to federations of heterogeneous services

  12. Federations of Services • Services may specialize with regard to • Content • Users • Usage • Mediating Services

  13. Highly interactive access Fast interaction vs. wide distribution of services

  14. Conclusion • Information access in context: • Time • Work • Social • Federations of heterogeneous DL services • Specialized wrt. content, usage and users • Highly interactive use vs. distributed services

  15. Context in Daffodil www.daffodil.de

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